CA2067445A1 - Conversion of television signal formats with retention of common control data stream - Google Patents

Conversion of television signal formats with retention of common control data stream

Info

Publication number
CA2067445A1
CA2067445A1 CA2067445A CA2067445A CA2067445A1 CA 2067445 A1 CA2067445 A1 CA 2067445A1 CA 2067445 A CA2067445 A CA 2067445A CA 2067445 A CA2067445 A CA 2067445A CA 2067445 A1 CA2067445 A1 CA 2067445A1
Authority
CA
Canada
Prior art keywords
control data
common control
television
data stream
retention
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2067445A
Other languages
French (fr)
Other versions
CA2067445C (en
Inventor
Kris Kelkar
Christopher John Bennett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arris Technology Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2067445A1 publication Critical patent/CA2067445A1/en
Application granted granted Critical
Publication of CA2067445C publication Critical patent/CA2067445C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream decryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation

Abstract

Television signals are converted from a first format to a plurality of different formats while retaining a common control data stream. A first television signal in a first format is separated into a first signal portion (12, 14) carrying television information and a second signal portion (12, 16) carrying control data. The first signal portion is reformatted into a second format (22).
The second signal portion is combined with the reformatted first signal portion to provide a second television signal (22 , 28, 32). In this manner, a plurality of television signals having different formats can be transmitted with common control data, e.g., for controlling access to television programming.
CA002067445A 1991-05-02 1992-04-28 Conversion of television signal formats with retention of common control data stream Expired - Lifetime CA2067445C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/694,796 US5138659A (en) 1991-05-02 1991-05-02 Conversion of television signal formats with retention of common control data stream
US07/694,796 1991-05-02

Publications (2)

Publication Number Publication Date
CA2067445A1 true CA2067445A1 (en) 1992-11-03
CA2067445C CA2067445C (en) 1999-09-07

Family

ID=24790316

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002067445A Expired - Lifetime CA2067445C (en) 1991-05-02 1992-04-28 Conversion of television signal formats with retention of common control data stream

Country Status (8)

Country Link
US (1) US5138659A (en)
EP (1) EP0512398B1 (en)
JP (1) JP2717238B2 (en)
KR (1) KR100237937B1 (en)
AU (1) AU645943B2 (en)
BR (1) BR9201658A (en)
CA (1) CA2067445C (en)
DE (1) DE69221199T2 (en)

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Also Published As

Publication number Publication date
KR920022897A (en) 1992-12-19
DE69221199T2 (en) 1998-01-29
EP0512398A2 (en) 1992-11-11
AU645943B2 (en) 1994-01-27
BR9201658A (en) 1992-12-15
JP2717238B2 (en) 1998-02-18
AU1595892A (en) 1992-11-05
KR100237937B1 (en) 2000-01-15
EP0512398B1 (en) 1997-07-30
JPH05183885A (en) 1993-07-23
CA2067445C (en) 1999-09-07
EP0512398A3 (en) 1993-06-16
US5138659A (en) 1992-08-11
DE69221199D1 (en) 1997-09-04

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Effective date: 20120428